TY - JOUR AU - Böhmer, Klaus AU - Janovská, Drahoslava AU - Janovský, Vladimír TI - Computing the differential of an unfolded contact diffeomorphism JO - Applications of Mathematics PY - 2003 SP - 3 EP - 30 VL - 48 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1023/A:1022950819918/ DO - 10.1023/A:1022950819918 LA - en ID - 10_1023_A_1022950819918 ER -